Python: Reads each row of a given csv file and skip the header of the file
Python CSV File Reading and Writing: Exercise-8 with Solution
Write a Python program that reads each row of a given csv file and skip the header of the file. Also print the number of rows and the field names.
Sample Solution:
Python Code :
import csv
fields = []
rows = []
with open('departments.csv', newline='') as csvfile:
data = csv.reader(csvfile, delimiter=' ', quotechar=',')
# Following command skips the first row of the CSV file.
fields = next(data)
for row in data:
print(', '.join(row))
print("\nTotal no. of rows: %d"%(data.line_num))
print('Field names are:')
print(', '.join(field for field in fields))
departments.csv
department_id,department_name,manager_id,location_id
10,Administration,200,1700
20,Marketing,201,1800
30,Purchasing,114,1700
40,Human Resources,203,2400
50,Shipping,121,1500
60,IT,103,1400
70,Public Relations,204,2700
80,Sales,145,2500
90,Executive,100,1700
100,Finance,108,1700
110,Accounting,205,1700
120,Treasury,,1700
130,Corporate Tax,,1700
140,Control And Credit,,1700
150,Shareholder Services,,1700
160,Benefits,,1700
170,Manufacturing,,1700
180,Construction,,1700
190,Contracting,,1700
200,Operations,,1700
210,IT Support,,1700
220,NOC,,1700
230,IT Helpdesk,,1700
240,Government Sales,,1700
250,Retail Sales,,1700
260,Recruiting,,1700
270,Payroll,,1700
Sample Output:
10,Administration,200,1700 20,Marketing,201,1800 30,Purchasing,114,1700 40,Human, Resources,203,2400 50,Shipping,121,1500 60,IT,103,1400 70,Public, Relations,204,2700 80,Sales,145,2500 90,Executive,100,1700 100,Finance,108,1700 110,Accounting,205,1700 120,Treasury,,1700 130,Corporate, Tax,,1700 140,Control, And, Credit,,1700 150,Shareholder, Services,,1700 160,Benefits,,1700 170,Manufacturing,,1700 180,Construction,,1700 190,Contracting,,1700 200,Operations,,1700 210,IT, Support,,1700 220,NOC,,1700 230,IT, Helpdesk,,1700 240,Government, Sales,,1700 250,Retail, Sales,,1700 260,Recruiting,,1700 270,Payroll,,1700 Total no. of rows: 28 Field names are: department_id,department_name,manager_id,location_id
Python Code Editor:
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Previous: Write a Python program to read specific columns of a given CSV file and print the content of the columns.
Next: Write a Python program to create an object for writing and iterate over the rows to print the values.
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Python: Tips of the Day
Creates a dictionary with the same keys as the provided dictionary and values generated by running the provided function for each value:
Example:
def tips_map_values(obj, fn): ret = {} for key in obj.keys(): ret[key] = fn(obj[key]) return ret users = { 'Owen': { 'user': 'Owen', 'age': 29 }, 'Eddie': { 'user': 'Eddie', 'age': 15 } } print(tips_map_values(users, lambda u : u['age'])) # {'Owen': 29, 'Eddie': 15}
Output:
{'Owen': 29, 'Eddie': 15}
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